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Checklist for Class Arachnida Lamarck, 1801 (Arachnids)
and region Madison (St. Joseph County, Indiana, USA)


Class
 		Arachnida
Lamarck, 1801
Arachnids		2
2
2		Families
Genera
Species		 
Taxom
 


List of families for Madison (St. Joseph County Indiana)
2 Families width 2 Species
Theridiidae (Sundevall, 1833)Cobweb And Widow Spiders1SpeciesTaxom
Trombiculidae Ewing, 1929Chigger mites1SpeciesTaxom


Genera for Madison (St. Joseph County Indiana)
2 Genera with 2 Species
Latrodectus Walckenaer, 1775Black widow spider1SpeciesTaxom
Walchia Ewing, 19641SpeciesTaxom


Species list for Madison (St. Joseph County Indiana)
2 Species
Latrodectus mactans (Fabricius, 1775)⇒ Latrodectus tredecimguttatus Rossi, 1790
Walchia (Wenia) isonychia Nadchatram &..., 1964

Subnodes of Arachnida with occurrences in Madison (St. Joseph County Indiana)
SubclassMicrura
Ehrenberg, 1831
2
2
2		Families
Genera
Species
Taxom



Arachnida (Lamarck 1801)
Arachnida (Lamarck 1801)


Links, sources and further information
Arachnida at biolcoll.utu.fi
Arachnida at wiki.spinnen-forum.de
Arachnida at spiderling.de
Arachnida at wsc.nmbe.ch
Arachnida at artfakta.se
Arachnida at biodiversity.org.au
Arachnida at dyntaxa.se
Arachnida at gbif.org
Arachnida at irmng.org
Arachnida at itis.gov
Arachnida at marinespecies.org